if bats are blind ?

Question

why do they only come out a night ,why not come out during the day?

Answer 1

Bats are not blind. They actually have great eyesight, especially at distances beyond the range of echolocation. Have you ever noticed how the bugs seem to come out at twilight in the summer? Bats eat insects (up to 4000 each per night!), so that might explain their nocturnal behavior. They come out when the food does.

Answer 2

Bats are not blind, they just have extremely poor sight. Bats are nocturnal because of a few reasons.
1) They are light sensitive, hence the only coming out after sunset.
2) A good majority of bats are insectivores. There are more insects that come out at night than there are in the day.
3) Bats come out at night to feed. There are less predators out at night that the bats would have to worry about.

Answer 3

As many pointed out, bats are not blind. Remember, that in the absence of light, there are no colors, shapes, or anything. Bats do not see in night vision, and although most species are active at night, all have the ability to see (and fly) during the day. Bats are active at night because of their evolutionary ancestry. They use the night to reduce the chance of predation and find food. Some species (e.g. Mormoopids) hunt insects up to 1 hr before sunset and 1 hr after sunrise, so in a way they are also active during some parts of the day. Nectarivorous bats use echolocation, smell, and vision to find flowers that are open at night. Old world fruit bats are mostly active during the day. Nocturnal bats use echolocation to find their way around; however, nectar and fruit feeding bats have low intensity echolocation calls. Old world fruit bats (a.k.a. flying foxes) do not have the ability to echolocate.

Answer 4

No, bats are not blind. The expression blind as a bat comes from observation made deep in caves where bats roost. Deep inside caves there is no light whatsoever. No moonlight, no star light, just absolute darkness. In there nothing with eyes can see. The bats squeak and use echolocation to find their food, insects and the like. These observations are what led to the expression as blind as a bat but it may have been truncated from as blind as a bat in a cave, they love caves, as that was too long to say.

Answer 5

Because the food that bats eat are found during the night not the day

Answer 6

They're not blind, they just have poor eyesight.

And many nocturnal animals have poor eyesight. It's the other senses that make up for it. And since bats feed on nocturnal insects, the best time for them to be out is at night when the moths are out. Otherwise they'd always be catching wasps and bees and things that will sting their little batty tongues.

Answer 7

bats are not blind....most have pretty good eyesight, but they use echolocation to get a more accurate location of prey. They come out at dusk because that is when the food they eat also come out.
Why would blind creatures have eyes in the first place...think about it and you would have realized that you are referring to an old wives tale or an urban myth.

Answer 8

Bats are not really blind they have eyes but like some other animals they see better at night and radar works better without human noise during the day.

Answer 9

Actually, bats are not blind, they see very well. They are nocturnal, which means they hunt at night. Think of their eyesight as a pair of binoculars with night vision. That is what they have. This is to help them find their prey. In daylight, the bright light hurts their eyes. If you happen upon one, you can shine a flashlight into their eyes and they will be blinded because of the high amount of light.

Answer 10

Bats are not blind. They do not see well. They sense the cooler temperatures at night and come out then.